TS.63 v1.0 UE Wi-Fi Calling Requirements Specification

The aim of this document is to define minimum Wi-Fi calling requirements for 5G SA device. 

The main body of this document is applicable for the scenario where Wi-Fi calling services are deployed in 5G System (NG-RAN, 5GC, UE) or 4G System (E-UTRAN, EPC, UE) including interworking with 5G and 4G system.

The present version of this PRD is restricted to profiling related to NG-RAN option SA NR (i.e. option 2) as defined in 3GPP TS 23.501 and legacy LTE as defined in 3GPP TS 23.401.